Backbone Monitoring Tools

Ashe Canvar acanvar at
Wed Mar 29 21:44:43 UTC 2006

Well, True. But the idea is to have a full mesh of 'n' sensors each
doing 'tests' to the remaining n-1 sensors. Finding asymmetric routes
should be trivial as I plan to feed it my router configs from rancid,
for detecting interfaces that belong to the same router. ( Of course,
this can't be extended to the Internet in genral. )

>From all the replies I have received, I don't think anything open
source fits the bill.

Going to the mines to write my own. Good bye cruel world...

On 3/29/06, Valdis.Kletnieks at <Valdis.Kletnieks at> wrote:
> On Tue, 28 Mar 2006 16:07:27 PST, Ashe Canvar said:
> >  2. actively detect routing changes / failover to redundant paths
> > using traceroutes
> >      i.e. alert if  SFO->CHG->NYC changes to SFO->LXE->HOU->NYC
> >      ( link state protocols suck as far as testing backup paths go)
> Two words:  "Asymmetric routes".  Just be aware of the implications.

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